Heating boiler



E. A. HOOPER Oca; 17, 1933.

HEATING BOILER Filed Jan. 4, 1933 3 Sheets-Sheet l INVENTOR. Z'IZerHoo/oer BY mm 2.

A TT ORNE Y E. A. HOOPER HEATING BOILER Filed Jan.

3 Sheets-Sheet 2 E. A. HOOPER HEATING BOILER @et E7, 1933.

Fiied Jan. 4, 1933 s sheetsheet 5 7 JNVENTOR. E /lfze #Hoa/ver ATTORNEY B Y Mila/w Patented Oct. 17, 1933 UNTED STATES PATENT OFFICE Y HEATINGv BOILER Application January 4, 1933. Serial No. 650,083

7 Claims.

This invention refers to improvements in water heaters or boilers especially adapted for the use of oil burners, which boilers are designed to be constructed of sheet steel, stay-bolted and electrically welded together.

An object of the invention is to provide a novel design of heater which can be constructed entirely of electrically welded sheet plate, and of a novel design whereby the intense and rapidly travelling heat, as from the oil burner, is passed backward and forward through the heat passages iive or more times so that when the smoke and other products of combustion enter the smoke iiue, there will be a relatively small amount of heat left in it.

A further object of the invention is to pro- -vide a sheet-steel type oi boiler which primarily comprises an outer iixed water jacket that in part forms the main combustion chamber and has a central opening therethrough, and to provide a removable water container of special construction that loosely fits into said central opening, and which has two elongated communicating heat passages one above the other, the lower one having inlet passages and the upper one having outlet passages, all of which are surrounded by the water container in the jacket, and

to include suitable pipe connections between the said outer water jacket and the inner water container, whereby a proper circulation of the water is assured.

Further objects of the invention are to provide means for removably supporting the cylindrical jacket within the central opening of the outer jacket and to enclose the same in said position with removable plates; also to provide suitable perforated baiile plates in the ends of the heat passages of the removable water jacket, and further to provide elongated plates against the crown sheets of the outer water jacket to form suitable elongated Vheat passages intermediate of the outer water jacket and the inner removable water container to insure the travel of the heat to the best advantage between selected portions of the two said water jackets.

While I have, in the accompanying drawings forming a part of this disclosure, illustrated two horizontal types of boilers, one including a single inner water container and the other provided with two such containers, yet it will be understood that the heater may be modied to include three or more of these inner removable containers, thus forming what might be regarded as a battery of boilers in a single unit, both coming within the limitations of my invention.

The invention will therefore be more fully explained and readily understood by reference to the accompanying drawings showing preferred embodiments of the invention, and on which similar characters of reference will be found to indicate like or corresponding parts throughout the several figures, and of which Fig. 1 shows a iront `elevation of my improved boiler having one closure plate removed;

Fig. 2 is a side elevation, as seen from theY right of Fig. 1;

Fig. 3 is a detached front elevation of one of the front closure plates, as used on both front and rear ends of the heater;

Fig. shows an enlarged central vertical sectional view, taken through the heater on line 4 4 of Fig. l;

Fig. 5 shows a rear elevation, partly broken away, of the main outer water jacket of the heater, with closure plates and innerk removable water container detached;

Fig. 6 shows a rear end View of the inner water container removed from the outer water jacket shown in Fig. 5, and having one of the small perforated baflie plates removed;

Fig. 7 is a side view of the baiiie plate removed ,from the rear end of the inner removable water container, shown in Fig. 6;

Fig. 8 shows a vertical cross section through the inner removable water container, taken on line 8-8 of Fig. 4, though on a smaller scale,ras

in Figs. 1 and 2; and

Fig. 9 shows a front elevation of a modiiied application of the invention, wherein a relatively larger outer water jacket is employed, and is designed to accommodate two inner watery containers instead of one, as illustrated in preceding views, the upper and lower portions of the outer water jacket and removablev water container heing provided with two outside detachable pipe co-nnections to insure proper 'circulation of water through both water containers.

The heater may obviously be made in various sizes or lengths, since the differences in sizes of this particular make of boiler are largely determined by the length or depth from front to rear, the boiler shown in the drawings being relatively short, forming one of the smaller sizes, such for instance as would be adapted for vresidence purposes.

The boiler includes an outer water jacket 10 formed between Ythe outer plate 11 and the inner or crown plate 12, which forms the two sides, top and end portions, of a combustion chamber 13 in the lower portion. A smoke outlet 14 is also and an intermediate central elongated space is provided to accommodate the removable water container 15, later to be referred to. This outer water jacket includes two aligned cylindrical openings 16, one in the front end and the other in the rear end of the heater, to freely and removably receive the said removable water container.

The legs of the outer water jacket may be supported on or lined with suitable brick work 17 and is provided with doors i8 and 19 through which the heater may be fired and cleaned, and to accommodate an oil burner 20 of any improved type, the furnace, as before suggested, being more particularly designed for the use of oil, and to meet the requirements of sudden changes of ternperature which are produced in furnaces when oil is used. The outer water jacket is provided with Y a water intake opening 21 which is shown plugged, in Figs. 2, 4 and 5, but which obviously may be connected with any suitable water supply, and whereby the boiler may be filled and replenished from time t'o time with required amounts of water.

22 represents an outlet in the top or dome portion of the heater, with which suitable hot water. or steam supply pipes maybe connected. A pipe 23 extends out from the upper rear portion of the boiler, and is connected with the lower leg portions of the boiler by pipes 24-24, whereby a return circulation from the upper to the lower portion of the outer water jacket is insured.

The removable water container 15 is preferably cylindrical in shape, and as suggested, forms a cylindrical water container that is connected both front and rear with the outer water jacket in a -way to insure a circulation ofA water to the best advantage to and from the outer water jacket, and whereby the two said water containers will function as a single unit. With this object in view, 1 have provided a pipe extension 25 from the lower portion of the rear end of the removable water container 16, having a clean-out plug 26 therein, and a somewhat similar pipe extension 27 from the lowergfront side of the removable container, which is also provided with a clean-out plug 28. The rear extension 25 of the removable water container and the extension 23 in the upper portion of the outer water jacket are provided with alignedpipes 29 and 3G that are connected by a union 31, see Figs. 2, 4 and 6, to form a circulating pipe connection between the upper portion of the outer water jacket and the lower portion of the removable water container.

A relatively short pipe 33 is extended forward from the upper portion of the removable cylindrical water container, and like the lower pipe 27 is provided with pipe connections 34-34 with the upper portion of the outer water jacket, so

Vas to insure a proper circulation of water as between the router water jacket and the inner water container. The pipes 32 and 34 are connected with theouter water jacket by means of union elbows 35 whereby the pipes may be readily disconnected, should occasion require, as for the purpose of removing the inner cylindrical water container. f

The front wall of the outer water jacket is provided on each side and on top of the inner water container with a clean-out opening 36, see Fig. 1, there being an elongated plate 37 secured to the inner crown' sheet of the outer water jacket that extends from the inner face of the front formed through the upper portion of the jacket,

wall of the water jacket adjacent the opening', to the inner face of the back wall of the outer water jacket, and is of a width to close the space between said crown sheet and the irmer removable water container, to forni a closed compartment that is accessible only through the said clean-out opening 36. The closing of this space on each side of the inner container is to insure the passage of the heat through the several heat passages of the cylindrical vater container. These openings 36, along with the cylindrical openings in the ends of the outer water jacket, are closed by plates 38, 39 and gaskets 49, which 'are secured to the outer face of the front portion of the outer water ,jacket by means of screw bolts, as shown.

41 and 42 represent plates sec'u'ed to the underside of the right an left portions of the crown sheet, see Figs. l and 2, that extend from the rear, forward, in spaced relation to the front end so as to form heat passages and so that as the heat passes out through the opposite outlet openings of the water container, it is directed first forward along the underside of the baille plate 4l, then through the opening 43 to the central opening 44 which communicates with the smoke outlet 14.

The removable water container l5 is formed of an outer cylindrical shell and inner walls which together with the front and rear end ineinbers 45 and 4G form an elongated cylindrical watei' container, and a pair ol' elongated heat passages 47 and 48 both of which are oval in cross section. The lower passage 47 is provided n its rear end portion with inlets 49 that permit thc heat from the combustion chamber to enter and pass forward. The forward end portions of these two passages 47 and 48 are connected by a vertical passage 50 that serves to allow the heat which travels forward through the lower passage 47 to pass up into the upper passage and return rearward to the outlets 5l which preferably extend out in opposite directions, and whereby the heat is caused to travel twice through the length of the removable container, in addition to the other longitudinal passages provided between the inner and outer water containers.

` A perforated `baiile plate 52 is secured in the in the forward end of the heat passages 47, 48 and 50, see Figs. 1 and 4, in spaced relation to the closure plate 38-39 by means of sc cws set in holes of the baiile plate and threadably engaging lugs 53 projected inward from the inner wall of the removable water container. The rear end of these passages 47 and 48 are also provided with somewhat similar though smaller perforated baffie plates 54 which are also positioned in spaced relation to the rear closure plate 38-39 and secured in position in a similar manner to that of the front baffle plate 52 by means of screws passing therethrough and engaging lugs 55 projected inward from the inner walls of the removable Water container, these baille plates being 'positioned in spaced relation to the closure plates and being perforated, obviously serve to protect the closure plates against the heat which travels forward and backward through these passages.

Having thus described my invention, what I claim and desire to secure by Letters Patent is: 1. A boiler of the class described including. a combustion chamber and aligned cylindrical openings in its opposite ends, an inner removable cylindrical water container positioned in* the boiler and4 loosely supported in the cylindrical openings and having a lower and an upper'elon- 'rie fri

gated heat passage connected at one end, having inlet passages connecting the lower heat passage and combustion chamber and outlet passages from the upper heat passage, and circulating pipes connecting the outer enclosing water jacket and the inner removable water container.

2. A boiler of the class described comprising an enclosed water jacket and combustion chamber having aligned cylindrical openings in its opposite ends, an inner removable cylindrical water container positioned in the boiler loosely supported in the cylindrical openings and having a lower and an upper elongated heat passage connected at one end, inlet passages connecting the lower heat passage and the combustion chamber and outlet passages from the upper heat passage, and circulating pipes connecting the outer enclosing water jacket and the inner removable water container.

3. A boiler of the class described comprising an enclosed water jacket and combustion chamber having aligned cylindrical openings in its opposite ends, an inner removable cylindrical water container positioned in the boiler loosely supported in the cylindrical openings and having a lower and an upper elongated heat passage connected at one end, inlet passages connecting the heat passage and the combustion chamber and outlet passages from the upper heat passage, perforated baiile plates positioned in the ends of the said elongated heat passages, and circulating pipes connecting the outer enclosing water jacket and the inner removable water container.

4. A boiler of the class described comprising an enclosed water jacket and combustion chamber having aligned cylindrical openings in its opposite ends, an inner cylindrical water container removably positioned in the cylindrical openings and having a lower and an upper elongated heat passage connected at one end, an inlet passage connecting with the combustion chamber and an outlet passage from the upper heat passage, removable plates for closing the ends of the cylindrical openings, perforated baie plates positioned in the ends of the said elongated heat passages in spaced relation to the removable plates, and circulating pipes connecting the outer enclosing water jacket and the inner removable water container.

5, A boiler of the class described comprising an enclosing water jacket having a combustion chamber in its lower portion and aligned cylindrical openings in its opposite ends, a removable cylindrical water container positioned in the boiler and loosely supported in the cylindrical openings, the said inner cylindical water jacket having a lower and an upper elongated heat passage connected at one end, an inlet passage connecting with the combustion chamber and an outlet passage from the upper heat passage, perforated baie plates in the ends of said elongated heat passages, removable plates for closing the ends of the cylindrical openings, elongated bafle plates projected from the crown sheet of the outer water jacket, forming forward and return elongated heat passages between the outer and inner Water containers, and circulating pipes positioned exterior of the boiler connecting the outer enclosing water jacket and the inner removable water container.

6. A boiler of the class described comprising an enclosing Water jacket having a combustion chamber in its lower portion and aligned cylindrical openings in its opposite ends, a removable cylindrical Water container positioned in the boiler and loosely supported in the cylindrical openings, with its outer cylindrical member in spaced relation to thecrown sheet of the enclosing water jacket, the said inner cylindrical water container having a lower and an upper internal elongated heat passage, connected at one end, inlet pas sages in the other end portion of said container that connect with the lower heat passage and outlet passages from the upper heat passage, perforated baffle plates in the end portions of said heat passages, attachable plates for closing the ends of the openings, water circulating pipes positioned exterior of the boiler connecting the outer enclosing Water jacket and the inner removable water container, elongated baffle plates between the sides of the cylindrical water container and the enclosing water jacket, forming a forward and return elongated passage between the outer water jacket and the removable water container through which the heat and smoke pass to the outlet.

'7. A boiler of the class described comprising an enclosing water jacket having a combustion chamber in its lower portion and aligned cylindrical openings in its opposite ends, a removable cylindrical water jacket positioned in the boiler and loosely supported in the cylindrical openings, with its outer cylindrical member in spaced relation to the crown sheet of the enclosing water jacket, the said inner cylindrical water container having lower and upper elongated heat passages that are oval in cross section and connected at one end, inlets in one end portion of said container that connect with one of the heat passages and outlets from the same end of the other heat passage, attachable plates for closing the ends of the openings, water circulating pipes positioned exterior of the boiler connecting the outer enclosing water jacket and the inner removable water container, elongated baffle plates between the sides of the cylindrical water container and the enclosing water jacket, forming forward and return elongated passages between the outer and inner water containers through which the heat and smoke pass to the outlet.

ELMER A. HOOPER. 

